Solving Systems Using Substitution and Elimination

To eliminate a variable in the system, should you add the equations or subtract the equations?

• Add

• Subtract

• Neither

Which variable would be easiest to eliminate?

• x

• y

• Neither

When you solve the system of equations, what is the solution for y?

• 8

• -1

• 1

• -8

• (4, 8)

• (5, 11)

• (3, 9)

• (2, 14)

y = 11

y + 4x = 35

• (4, 11)

• (-9, 11)

• (11, 4)

• (11, -9)

2x + y = 7

x = 3y

• (0, 5)

• (3, 1)

• (6, 14)

• (2, 1)

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Solve the system. Record your answer as (x,y).

Solve this system by substitution.

• (1, -4)

• (1, 4)

• (-4, -7)

• (-7, -4)

Which method would be best for solving this system?

• Substitution

• Elimination